Fix for Bug 3601848. Node copy function of RemoteQuery copied remote_param_types
field even when it was NULL in the source node, leading to inconsistent BIND
message being sent to datanode. Corrected the same.
Nikhil Sontakke kindly provided this to fix gtm_ctl dependency
on PATH environment, the bug 3602944.

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