Add cpplint check for '\bthrow new\b'
Add cpplint check for '\bthrow new\b'

This would have caught the bugs fixed in the last commit.

rstutsman/RAMCloud,behnamm/cs244b_project,matrix207/RAMCloud,rstutsman/RAMCloud,jblomer/ramcloud,rstutsman/RAMCloud,SMatsushi/RAMCloud,IMCG/RamCloud,rstutsman/RAMCloud,rstutsman/RAMCloud,taschik/ramcloud,utah-scs/RAMCloud,y-higuchi/ramcloud,anirajk/RAMCloud,anirajk/RAMCloud,SMatsushi/RAMCloud,alexandermerritt/ramcloud,behnamm/cs244b_project,anirajk/RAMCloud,Frank-Wu/RamCloud,matrix207/RAMCloud,DavidLi2010/ramcloud,Frank-Wu/RamCloud,DavidLi2010/ramcloud,Frank-Wu/RamCloud,utah-scs/RAMCloud,mrdiegoa/ramcloud,IMCG/RamCloud,jblomer/ramcloud,DavidLi2010/ramcloud,IMCG/RamCloud,alexandermerritt/ramcloud,jblomer/ramcloud,QingkaiLu/RAMCloud,matrix207/RAMCloud,alexandermerritt/ramcloud,y-higuchi/ramcloud,SMatsushi/RAMCloud,DavidLi2010/ramcloud,alexandermerritt/ramcloud,alexandermerritt/ramcloud,jcarreira/ramcloud,behnamm/cs244b_project,DavidLi2010/ramcloud,jcarreira/ramcloud,utah-scs/RAMCloud,anirajk/RAMCloud,QingkaiLu/RAMCloud,utah-scs/RAMCloud,QingkaiLu/RAMCloud,IMCG/RamCloud,mrdiegoa/ramcloud,y-higuchi/ramcloud,taschik/ramcloud-load-manager,taschik/ramcloud-load-manager,SMatsushi/RAMCloud,taschik/ramcloud-load-manager,behnamm/cs244b_project,jcarreira/ramcloud,Frank-Wu/RamCloud,taschik/ramcloud-load-manager,utah-scs/RAMCloud,matrix207/RAMCloud,anirajk/RAMCloud,taschik/ramcloud-load-manager,mrdiegoa/ramcloud,jcarreira/ramcloud,mrdiegoa/ramcloud,anirajk/RAMCloud,IMCG/RamCloud,y-higuchi/ramcloud,DavidLi2010/ramcloud,jcarreira/ramcloud,jblomer/ramcloud,y-higuchi/ramcloud,Frank-Wu/RamCloud,rstutsman/RAMCloud,QingkaiLu/RAMCloud,QingkaiLu/RAMCloud,utah-scs/RAMCloud,taschik/ramcloud,jblomer/ramcloud,mrdiegoa/ramcloud,jblomer/ramcloud,mrdiegoa/ramcloud,behnamm/cs244b_project,taschik/ramcloud,jcarreira/ramcloud,taschik/ramcloud,Frank-Wu/RamCloud,QingkaiLu/RAMCloud,SMatsushi/RAMCloud,SMatsushi/RAMCloud,IMCG/RamCloud,alexandermerritt/ramcloud,y-higuchi/ramcloud,matrix207/RAMCloud,matrix207/RAMCloud,taschik/ramcloud,behnamm/cs244b_project