C++: Modify CMakeLists to fix issue 28.
C++: Modify CMakeLists to fix issue 28.

mlevytskiy/libphonenumber,karimhb/libphonenumber,dpocock/libphonenumber,JasOXIII/libphonenumber,alecx/libphonenumber,stevenliuit/libphonenumber,javimey/libphonenumber,ceosilvajr/libphonenumber,shelsonjava/libphonenumber,alecx/libphonenumber,pchero/libphonenumber,johnnyshields/libphonenumber,johnnyshields/libphonenumber,javimey/libphonenumber,mihaelacr-google/libphonenumber,pchero/libphonenumber,roes/libphonenumber,lcorbasson/libphonenumber,weitzhandler/libphonenumber,keghani/libphonenumber,shelsonjava/libphonenumber,alecx/libphonenumber,joharmandav/libphonenumber,google/libphonenumber,JasOXIII/libphonenumber,weitzhandler/libphonenumber,joharmandav/libphonenumber,keghani/libphonenumber,mujiansu/libphonenumber,alecx/libphonenumber,waveremit/libphonenumber,shelsonjava/libphonenumber,hejunbinlan/libphonenumber,gautier-gdx/libphonenumber,weitzhandler/libphonenumber,google/libphonenumber,google/libphonenumber,tg123/libphonenumber,mistrydarshan99/libphonenumber,digideskio/libphonenumber,mtownsen/libphonenumber,hejunbinlan/libphonenumber,fishman1986/libphonenumber,alucic/libphonenumber,mtownsen/libphonenumber,javimey/libphonenumber,roes/libphonenumber,ceosilvajr/libphonenumber,stevenliuit/libphonenumber,pplatek/libphonenumber,pchero/libphonenumber,Corei13/libphonenumber,mistrydarshan99/libphonenumber,stevenliuit/libphonenumber,tg123/libphonenumber,mcanthony/libphonenumber,keghani/libphonenumber,fishman1986/libphonenumber,javimey/libphonenumber,digideskio/libphonenumber,seegno-forks/libphonenumber,dpocock/libphonenumber,mtownsen/libphonenumber,JasOXIII/libphonenumber,ceosilvajr/libphonenumber,mlevytskiy/libphonenumber,javimey/libphonenumber,Corei13/libphonenumber,JasOXIII/libphonenumber,lcorbasson/libphonenumber,gautier-gdx/libphonenumber,joharmandav/libphonenumber,ceosilvajr/libphonenumber,Corei13/libphonenumber,karimhb/libphonenumber,mtownsen/libphonenumber,johnnyshields/libphonenumber,seegno-forks/libphonenumber,hejunbinlan/libphonenumber,johnnyshields/libphonenumber,mcanthony/libphonenumber,shelsonjava/libphonenumber,pplatek/libphonenumber,ceosilvajr/libphonenumber,mistrydarshan99/libphonenumber,Corei13/libphonenumber,JasOXIII/libphonenumber,tg123/libphonenumber,mlevytskiy/libphonenumber,digideskio/libphonenumber,waveremit/libphonenumber,mistrydarshan99/libphonenumber,alucic/libphonenumber,mistrydarshan99/libphonenumber,digideskio/libphonenumber,seegno-forks/libphonenumber,waveremit/libphonenumber,pchero/libphonenumber,stevenliuit/libphonenumber,google/libphonenumber,dpocock/libphonenumber,keghani/libphonenumber,google/libphonenumber,mlevytskiy/libphonenumber,roes/libphonenumber,karimhb/libphonenumber,pplatek/libphonenumber,dpocock/libphonenumber,roes/libphonenumber,gautier-gdx/libphonenumber,waveremit/libphonenumber,weitzhandler/libphonenumber,mujiansu/libphonenumber,mihaelacr-google/libphonenumber,digideskio/libphonenumber,mlevytskiy/libphonenumber,mujiansu/libphonenumber,mujiansu/libphonenumber,alucic/libphonenumber,fishman1986/libphonenumber,gautier-gdx/libphonenumber,hejunbinlan/libphonenumber,alucic/libphonenumber,karimhb/libphonenumber,weitzhandler/libphonenumber,lcorbasson/libphonenumber,gautier-gdx/libphonenumber,pplatek/libphonenumber,tg123/libphonenumber,roes/libphonenumber,karimhb/libphonenumber,tg123/libphonenumber,Corei13/libphonenumber,joharmandav/libphonenumber,google/libphonenumber,lcorbasson/libphonenumber,pplatek/libphonenumber,hejunbinlan/libphonenumber,mihaelacr-google/libphonenumber,johnnyshields/libphonenumber,mcanthony/libphonenumber,waveremit/libphonenumber,stevenliuit/libphonenumber,fishman1986/libphonenumber,mihaelacr-google/libphonenumber,pchero/libphonenumber,shelsonjava/libphonenumber,seegno-forks/libphonenumber,dpocock/libphonenumber,mihaelacr-google/libphonenumber,joharmandav/libphonenumber,lcorbasson/libphonenumber,mujiansu/libphonenumber,alecx/libphonenumber,mcanthony/libphonenumber,mcanthony/libphonenumber,alucic/libphonenumber,fishman1986/libphonenumber,mtownsen/libphonenumber,keghani/libphonenumber