ap-2.4.x and .\proxy - NetWare build

[NormW]

G/M,
Revision r1728804 added NWGNUhcheck to httpd-trunk and added an entry 
into NWGNUmakefile in the same directory - r1744951 (amongst other 
things) added the entry into the 2.4 .\proxy\NWGNUmakefile but did not 
copy the NWGNUhcheck file itself (added to trunk as noted above) to 2.4.

FYI If a dir is to be built, it MUST have a NWGNUmakefile. If there is 
only one item to built in the dir, the NWGNUmakefile can contain the 
build process for that item. If there are multiple items to build in the 
dir, the NWGNUmakefile contains a list of the NLM's to be built, where 
the build system prepends 'NWGNU' to the front of the NLM name to get 
the name of actual Makefile it needs to run to build the item.

E.g The NLM list in .\proxy\NWGNUmakefile includes proxy.nlm but the 
build system looks to find a NWGNUproxy file to build it; happily no onr 
I kmow designed this, and many requests to simplify it fell on deaf ears.

Norm