Mark BROKEN: fails to build, does not respect DISABLE_MAKE_JOBS

gmake[2]: Entering directory '/wrkdirs/usr/ports/math/gotoblas/work/GotoBLAS2/test'
f77 -O2 -Wl,-rpath=/usr/local/lib/gcc48 -m128bit-long-double -Wall -m64 -fPIC -c sblat1.f -o sblat1.o
gmake[2]: f77: Command not found
f77 -O2 -Wl,-rpath=/usr/local/lib/gcc48 -m128bit-long-double -Wall -m64 -fPIC -c dblat1.f -o dblat1.o
gmake[2]: f77: Command not found
f77 -O2 -Wl,-rpath=/usr/local/lib/gcc48 -m128bit-long-double -Wall -m64 -fPIC -c cblat1.f -o cblat1.o
../Makefile.system:721: recipe for target 'dblat1.o' failed
gmake[2]: * [dblat1.o] Error 127
gmake[2]: * Waiting for unfinished jobs....
../Makefile.system:721: recipe for target 'sblat1.o' failed
gmake[2]: *** [sblat1.o] Error 127
gmake[2]: f77: Command not found
../Makefile.system:721: recipe for target 'cblat1.o' failed

Reported by: pkg-fallout