jpeg2ps - fix build and test commands

Remove patch, instead set variables in make install command:
BINDIR=#{bin}, MANDIR=#{man}

Create needed directories first before running make install.

Change test to try to find local .jpg file in /Library.

Fix test call from jpeg2ps to #{bin}/jpeg2ps.
cdlabelgen - fix build and test commands

Remove patch, instead set prefix in make install command.

Create man1 directory before running make install.

Use full path to binary in test, cdlabelgen -> #{bin}/cdlabelgen