Until now the kernel config option to enable the SRP target was called

Until now the kernel config option to enable the SRP target was called
CONFIG_INFINIBAND_SRPT. This is a reminiscent from the time when the SRPT code
resided in the directory drivers/infiniband/ulp/srpt. Since this code has been moved
into the directory drivers/scst/srpt, the path below renames this config option
into CONFIG_SCST_SRPT. The other changes present in this patch are:
- Removed srpt/src/Makefile.infiniband.Linux-2.6.2[45].patch since these files are obsolete.
- Rewrote Kconfig help text slightly.

The patch below has been tested by verifying that the 2.6.26.5 kernel + SCST
patch still compiles cleanly with CONFIG_SCST_SRPT=m.

Signed-off-by: Bart Van Assche <bart.vanassche@gmail.com>
git-svn-id: https://scst.svn.sourceforge.net/svnroot/scst/trunk@518 d57e44dd-8a1f-0410-8b47-8ef2f437770f