Remove boxed string and template from log calls.
Remove boxed string and template from log calls.

Every call to the GAPID_LOG macro in C++ instantiated a new template
function to remove some path information from the __FILE__ macro. This
pulluted the function symbols by nearly 87% and slowed down the build by
about 5 minutes (Win32 full clean/rebuild goes from 25m -> 20m).

google/agi,pmuetschard/gapid,baldwinn860/gapid,baldwinn860/gapid,google/agi,google/gapid,pmuetschard/gapid,baldwinn860/gapid,Qining/gapid,pmuetschard/gapid,Qining/gapid,google/gapid,pmuetschard/gapid,google/gapid,pmuetschard/gapid,google/gapid,baldwinn860/gapid,baldwinn860/gapid,Qining/gapid,Qining/gapid,google/gapid,google/agi,Qining/gapid,google/agi,google/agi,google/gapid,google/agi,baldwinn860/gapid,Qining/gapid,pmuetschard/gapid,google/agi,google/agi,baldwinn860/gapid,pmuetschard/gapid,Qining/gapid,google/gapid,pmuetschard/gapid,baldwinn860/gapid,google/gapid,Qining/gapid