Exclude gdbserver from xwalk_core_library
Exclude gdbserver from xwalk_core_library

For the release version of cordova container, there is a license
issue to contain a gdbsever binary in the release binary. Because
the gdbserver is under GPL license.
So exclude gdbserver binary from release version and leave it
for debug version.

BUG=https://crosswalk-project.org/jira/browse/XWALK-635

axinging/crosswalk,bestwpw/crosswalk,weiyirong/crosswalk-1,baleboy/crosswalk,PeterWangIntel/crosswalk,hgl888/crosswalk,alex-zhang/crosswalk,rakuco/crosswalk,chuan9/crosswalk,jpike88/crosswalk,XiaosongWei/crosswalk,PeterWangIntel/crosswalk,marcuspridham/crosswalk,qjia7/crosswalk,zeropool/crosswalk,jondwillis/crosswalk,axinging/crosswalk,bestwpw/crosswalk,darktears/crosswalk,zliang7/crosswalk,huningxin/crosswalk,darktears/crosswalk,huningxin/crosswalk,xzhan96/crosswalk,DonnaWuDongxia/crosswalk,crosswalk-project/crosswalk-efl,dreamsxin/crosswalk,Bysmyyr/crosswalk,weiyirong/crosswalk-1,darktears/crosswalk,seanlong/crosswalk,heke123/crosswalk,chuan9/crosswalk,tomatell/crosswalk,axinging/crosswalk,hgl888/crosswalk-efl,crosswalk-project/crosswalk-efl,jpike88/crosswalk,shaochangbin/crosswalk,shaochangbin/crosswalk,siovene/crosswalk,chinakids/crosswalk,seanlong/crosswalk,crosswalk-project/crosswalk-efl,chuan9/crosswalk,TheDirtyCalvinist/spacewalk,tomatell/crosswalk,pk-sam/crosswalk,jondong/crosswalk,alex-zhang/crosswalk,DonnaWuDongxia/crosswalk,ZhengXinCN/crosswalk,heke123/crosswalk,chinakids/crosswalk,darktears/crosswalk,ZhengXinCN/crosswalk,dreamsxin/crosswalk,siovene/crosswalk,chinakids/crosswalk,huningxin/crosswalk,siovene/crosswalk,fujunwei/crosswalk,xzhan96/crosswalk,darktears/crosswalk,ZhengXinCN/crosswalk,leonhsl/crosswalk,hgl888/crosswalk-efl,baleboy/crosswalk,lincsoon/crosswalk,alex-zhang/crosswalk,minggangw/crosswalk,bestwpw/crosswalk,jpike88/crosswalk,jondong/crosswalk,qjia7/crosswalk,TheDirtyCalvinist/spacewalk,axinging/crosswalk,ZhengXinCN/crosswalk,tomatell/crosswalk,stonegithubs/crosswalk,shaochangbin/crosswalk,mrunalk/crosswalk,Bysmyyr/crosswalk,zliang7/crosswalk,lincsoon/crosswalk,jondong/crosswalk,qjia7/crosswalk,XiaosongWei/crosswalk,heke123/crosswalk,myroot/crosswalk,RafuCater/crosswalk,minggangw/crosswalk,jpike88/crosswalk,amaniak/crosswalk,XiaosongWei/crosswalk,PeterWangIntel/crosswalk,huningxin/crosswalk,xzhan96/crosswalk,minggangw/crosswalk,tedshroyer/crosswalk,marcuspridham/crosswalk,zliang7/crosswalk,ZhengXinCN/crosswalk,siovene/crosswalk,RafuCater/crosswalk,minggangw/crosswalk,fujunwei/crosswalk,pk-sam/crosswalk,amaniak/crosswalk,xzhan96/crosswalk,crosswalk-project/crosswalk,leonhsl/crosswalk,siovene/crosswalk,hgl888/crosswalk,zeropool/crosswalk,qjia7/crosswalk,Pluto-tv/crosswalk,heke123/crosswalk,Pluto-tv/crosswalk,tedshroyer/crosswalk,jondong/crosswalk,crosswalk-project/crosswalk,DonnaWuDongxia/crosswalk,hgl888/crosswalk,fujunwei/crosswalk,pk-sam/crosswalk,minggangw/crosswalk,darktears/crosswalk,rakuco/crosswalk,chinakids/crosswalk,TheDirtyCalvinist/spacewalk,PeterWangIntel/crosswalk,RafuCater/crosswalk,rakuco/crosswalk,fujunwei/crosswalk,marcuspridham/crosswalk,siovene/crosswalk,dreamsxin/crosswalk,jpike88/crosswalk,amaniak/crosswalk,weiyirong/crosswalk-1,huningxin/crosswalk,marcuspridham/crosswalk,pk-sam/crosswalk,dreamsxin/crosswalk,chuan9/crosswalk,tomatell/crosswalk,Pluto-tv/crosswalk,zeropool/crosswalk,baleboy/crosswalk,XiaosongWei/crosswalk,dreamsxin/crosswalk,siovene/crosswalk,baleboy/crosswalk,leonhsl/crosswalk,crosswalk-project/crosswalk,jondwillis/crosswalk,RafuCater/crosswalk,baleboy/crosswalk,jondwillis/crosswalk,chuan9/crosswalk,hgl888/crosswalk,darktears/crosswalk,zeropool/crosswalk,jondwillis/crosswalk,fujunwei/crosswalk,rakuco/crosswalk,PeterWangIntel/crosswalk,zliang7/crosswalk,Bysmyyr/crosswalk,hgl888/crosswalk-efl,stonegithubs/crosswalk,seanlong/crosswalk,tomatell/crosswalk,myroot/crosswalk,dreamsxin/crosswalk,tedshroyer/crosswalk,Pluto-tv/crosswalk,myroot/crosswalk,chuan9/crosswalk,chinakids/crosswalk,seanlong/crosswalk,heke123/crosswalk,RafuCater/crosswalk,lincsoon/crosswalk,jpike88/crosswalk,crosswalk-project/crosswalk-efl,heke123/crosswalk,weiyirong/crosswalk-1,jondwillis/crosswalk,jondwillis/crosswalk,PeterWangIntel/crosswalk,TheDirtyCalvinist/spacewalk,crosswalk-project/crosswalk,pk-sam/crosswalk,rakuco/crosswalk,Pluto-tv/crosswalk,shaochangbin/crosswalk,zeropool/crosswalk,RafuCater/crosswalk,jondong/crosswalk,mrunalk/crosswalk,XiaosongWei/crosswalk,bestwpw/crosswalk,weiyirong/crosswalk-1,myroot/crosswalk,DonnaWuDongxia/crosswalk,amaniak/crosswalk,qjia7/crosswalk,fujunwei/crosswalk,TheDirtyCalvinist/spacewalk,mrunalk/crosswalk,crosswalk-project/crosswalk-efl,XiaosongWei/crosswalk,chuan9/crosswalk,marcuspridham/crosswalk,jondong/crosswalk,Bysmyyr/crosswalk,lincsoon/crosswalk,bestwpw/crosswalk,jondong/crosswalk,zliang7/crosswalk,myroot/crosswalk,baleboy/crosswalk,alex-zhang/crosswalk,Bysmyyr/crosswalk,hgl888/crosswalk-efl,darktears/crosswalk,shaochangbin/crosswalk,marcuspridham/crosswalk,hgl888/crosswalk-efl,heke123/crosswalk,hgl888/crosswalk-efl,heke123/crosswalk,mrunalk/crosswalk,alex-zhang/crosswalk,ZhengXinCN/crosswalk,lincsoon/crosswalk,hgl888/crosswalk,fujunwei/crosswalk,leonhsl/crosswalk,axinging/crosswalk,weiyirong/crosswalk-1,marcuspridham/crosswalk,jondong/crosswalk,crosswalk-project/crosswalk,baleboy/crosswalk,amaniak/crosswalk,xzhan96/crosswalk,huningxin/crosswalk,weiyirong/crosswalk-1,rakuco/crosswalk,Pluto-tv/crosswalk,stonegithubs/crosswalk,stonegithubs/crosswalk,leonhsl/crosswalk,minggangw/crosswalk,tedshroyer/crosswalk,jondwillis/crosswalk,baleboy/crosswalk,hgl888/crosswalk,lincsoon/crosswalk,XiaosongWei/crosswalk,Bysmyyr/crosswalk,crosswalk-project/crosswalk-efl,xzhan96/crosswalk,zeropool/crosswalk,qjia7/crosswalk,seanlong/crosswalk,zliang7/crosswalk,Bysmyyr/crosswalk,rakuco/crosswalk,crosswalk-project/crosswalk,pk-sam/crosswalk,tomatell/crosswalk,minggangw/crosswalk,amaniak/crosswalk,ZhengXinCN/crosswalk,rakuco/crosswalk,Pluto-tv/crosswalk,tomatell/crosswalk,axinging/crosswalk,alex-zhang/crosswalk,mrunalk/crosswalk,tedshroyer/crosswalk,zeropool/crosswalk,DonnaWuDongxia/crosswalk,crosswalk-project/crosswalk,DonnaWuDongxia/crosswalk,shaochangbin/crosswalk,tedshroyer/crosswalk,marcuspridham/crosswalk,chinakids/crosswalk,dreamsxin/crosswalk,hgl888/crosswalk,crosswalk-project/crosswalk-efl,xzhan96/crosswalk,zliang7/crosswalk,RafuCater/crosswalk,stonegithubs/crosswalk,PeterWangIntel/crosswalk,hgl888/crosswalk-efl,pk-sam/crosswalk,axinging/crosswalk,crosswalk-project/crosswalk,jpike88/crosswalk,DonnaWuDongxia/crosswalk,mrunalk/crosswalk,alex-zhang/crosswalk,myroot/crosswalk,stonegithubs/crosswalk,leonhsl/crosswalk,bestwpw/crosswalk,seanlong/crosswalk,leonhsl/crosswalk,amaniak/crosswalk,tedshroyer/crosswalk,minggangw/crosswalk,TheDirtyCalvinist/spacewalk,hgl888/crosswalk,lincsoon/crosswalk,stonegithubs/crosswalk,bestwpw/crosswalk,Bysmyyr/crosswalk,lincsoon/crosswalk,zliang7/crosswalk,xzhan96/crosswalk