Fix env variables, Add dirs, redirect to a log file

The gtmroutines variable was coded in two places for x64 and x32 -
factor out the common parts to another variable that is included in the
x64 and x32 if statement

The gtm_zinterrupt variable contained characters that were interpreted
by the bash script and not included as intended in the env script

The p and s directories are for primary and secondary development
respectively. These directories are useful for installing nodem and
other hot fixes.

Redirect the GDE and mupip create to a log file so strange output
doesn't get displayed to the user.

Change-Id: Ic31f0e0b6eeb160a784efc2408bce1ac18a19e0f