gb compatibility
gb compatibility

gb (https://github.com/constabulary/gb) uses a slightly different pkg
layout. This adds the new scheme to the `find_global_file` function.

TheBB/gocode,louiseGrandjonc/gocode,beni55/gocode,TheBB/gocode,artnez/gocode,mem/gocode,MerlinDMC/gocode,lmh008/gocode,beni55/gocode,nsf/gocode,MerlinDMC/gocode,lmh008/gocode,mdempsky/gocode,mem/gocode,TheBB/gocode,mem/gocode,TheBB/gocode,thousandhigh/gocode,mem/gocode,MerlinDMC/gocode,lmh008/gocode,artnez/gocode,artnez/gocode,thousandhigh/gocode,mdempsky/gocode,nsf/gocode,nsf/gocode,artnez/gocode,MerlinDMC/gocode,louiseGrandjonc/gocode,beni55/gocode,thousandhigh/gocode,thousandhigh/gocode,louiseGrandjonc/gocode,nsf/gocode,louiseGrandjonc/gocode,beni55/gocode,lmh008/gocode,mdempsky/gocode