first conditionalized docs (TRUNK ONLY)

plus various related missing bits and tids

doc/dlb.6

@@ -24,8 +24,18 @@ read-only information.  Note that like tar the command and option
 specifiers are specified as a continuous string and are followed
 by any arguments required in the same order as the option specifiers.
 .PP
+^?ALLDOCS
 This facility is optional and may be excluded during NetHack
 configuration.
+^:
+^?DLB
+This facility is optional but is included in this NetHack
+configuration.
+^:
+This facility is optional and was excluded from this NetHack
+configuration.
+^.
+^.
 .SH COMMANDS
 The
 .B x

doc/fixes35.0

@@ -438,3 +438,4 @@ new oextra structure housing pointers to oname, omonst, omid, olong, and omailcm
 drawing symbols for DECGraphics, IBMGraphics, MACgraphics are now stored in an
 	external symbol file that can be changed without rebuilding
 new hints-based configuration system
+allow documentation to be specialized to the options in the game binary

doc/recover.6

@@ -33,11 +33,26 @@ It overrides the value from NETHACKDIR, HACKDIR, or the directory
 specified by the game administrator during compilation
 (usually /usr/games/lib/nethackdir).
 .PP
+^?ALLDOCS
 For recovery to be possible,
 .I nethack
 must have been compiled with the INSURANCE option, and the run-time option
 .I checkpoint
 must also have been on.
+^:
+^?INSURANCE
+For recovery to be possible,
+.I nethack
+must have been compiled with the INSURANCE option (this configuration was),
+and the run-time option
+.I checkpoint
+must also have been on.
+^:
+This configuration of
+.I nethack
+was created without support for recovery.
+^.
+^.
 NetHack normally writes out files for levels as the player leaves them,
 so they will be ready for return visits.
 When checkpointing, NetHack also writes out the level entered and