Nikhil Sontakke kindly provided this to fix gtm_ctl dependency
on PATH environment, the bug 3602944.

	modified:   src/gtm/gtm_ctl/Makefile
	modified:   src/gtm/gtm_ctl/gtm_ctl.c
	modified:   src/gtm/main/main.c
	modified:   src/gtm/proxy/proxy_main.c