rsc: remove VMS support

Change-Id: I20e8cc7014c140b6e7996ac51fc2d4c8030e2264
rsc: remove RSX support

Change-Id: I8b4e33ef6dd0c8e3af17fc358feab655e263de0f
rsc: remove RT11 support

Change-Id: I9e9899c330868eb51b717d49ea901f15005692db
rsc: remove LATTICE support

Change-Id: I904a6ec522ae4a97eefebf1f1ec6554e8e66747d
rsc: remove ONYX support

Change-Id: Ia6707ec17bf46b582dc344541857324976408833
rsc: remove 68000 support

Change-Id: Ib72dc8800bbc91905445d838657e50dfcc021b40
rsc: remove PDP support

Change-Id: I06ad5702aed280bc1e19743246167e1d6fd1af95
rsc: remove VAX support

Change-Id: Ib3928c5f26d191d5ba184599edaa2e08668b16f5
rsc: remove unused OLD_PREPROCESSOR

and consequently unused
   OK_DOLLAR
   OK_CONCAT
   COMMENT_INVISIBLE
   STRING_FORMAL

Change-Id: I801b98be8a2fc04b7568fabff9aad486356a69c9
rsc: remove support for DECUS

and consequently unused define "nomacargs"

Change-Id: Ica5da9cf03ad63bf07b3385995ebf420ffb28089
rsc: NOMAIN is always true

Change-Id: Ib219ab2e85f6fff3ece93b95d4c61bad48e719ac
rsc: remove more DEC remnants

Change-Id: I6b084d6b08ff2e7bd9adfba4c9eda7c8c650305c
cid#983095 Resource leak

Change-Id: I2792afbfedbb256e0b79236505176f932ab25ce7