Fixed problem with previously generated scan.c which was not case-independent.

Regenerated scan.c, and added instructions for later maintainers.

src/toolsComm/flex/EPICS_READ_THIS

@@ -1,25 +1,32 @@
-
-This is the regular GNU flex that has had its skeleton file munged with in
+This is a version of the BSD flex that has had its skeleton file munged in
 order to force it to build lex programs that have all their functions and 
-variables defined as static.  
+variables defined as static.
 
-The file in Unix/share/bin/flex.skel.static is simply a copy of flex.skel that 
-has been altered to make all the components into static variables.
+The file flex.skel.static is simply a copy of flex.skel that has been altered
+to make all the components into static variables.
 
 In order to be able to actually use the lex files produced by this flavor of
 flex, you must #include them into your C programs.  Otherwise they will
-be uncallable (all functions are static.)  This is typical of lex programs
-that are used by yacc programs anyway.  
+be uncallable (all functions are static).  This is typical of lex programs
+that are used by yacc programs anyway.
 
---John Winans  11-18-93
+The scan.c file is actually the output of scan.l.DISTRIB when run through
+itself, using the regular flex.skel skeleton with the -i option.
 
-The file Unix/share/bin/flex.skel.static has been moved to
-include/flex.skel.static.
+To regenerate scan.c, make sure you have a build of a working e_flex binary
+somewhere, then in this directory (not an O.<arch> build directory):
 
---Mike Bordua  07/12/94
-(NOTE TO EPICS SYSTEM MAINTATNERS... the only thing different about this flex 
-and the GNU distribution is the Makefile->Imakefile transition, and the 
-modification of the skeleton file.  It should be easy enough to start over
-again if you wish to remove the imake stuff... just make sure you get one that
-has the same skeleton version so you can use our hacked one... or do the diff
-game on them.)
+% mv scan.l.DISTRIB scan.l
+% /path/to/e_flex -Sflex.skel -8 -i scan.l
+% mv lex.yy.c scan.c
+% make
+
+Then use the new binary to make sure it can build itself:
+
+% O.<arch>/e_flex -Sflex.skel -8 -i scan.l
+% mv lex.yy.c scan.c
+% make
+
+If that succeeds, don't forget to rename scan.l back again:
+
+% mv scan.l scan.l.DISTRIB

src/toolsComm/flex/scan.l.DISTRIB

@@ -28,16 +28,8 @@
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
-#ifndef lint
-static char rcsid[] =
-    "@(#) $Header$ (LBL)";
-#endif
-
 #undef yywrap
 
-#include "flexdef.h"
-#include "parse.h"
-
 #define ACTION_ECHO fprintf( temp_action_file, "%s", yytext )
 #define MARK_END_OF_PROLOG fprintf( temp_action_file, "%%%% end of prolog\n" );