Log Message:
-----------
Make relevant changes on the script to handle the installation of trusted and
untrusted PLs in a more distinguished way.
Also mention about new custom GUC variables and copy freshly introduced init.scm
file too.
Modified Files:
--------------
plscheme:
install.sh (r1.7 -> r1.8)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plscheme/plscheme/install.sh.diff?r1=1.7&r2=1.8)