.gitignore cleanups

* Clarified bogosity of toplevel .gitignore (and other such files)

* Removed "doc/" in the toplevel file -- looks like this was some broken
  leftover, and it's dangerous for at least "scribble/doc" (which
  contains code).

* Collapse more common patterns into worksp instead of in each file.

* Use a trailing "/" for directories.

* racket/lib/collects/pkg/.gitignore looks like a leftover that is no
  longer needed.

.gitignore

@@ -1,8 +1,17 @@
+# Note: this file is mostly meaningless, since the toplevel directory
+# will not exist after a repository split.  The same holds for .mailmap
+# (which some people can decide if they want to thin it out or not
+# include it) and for ".gitattributes" (which is probably irrelevant
+# except maybe for the core repo).
+
+# These are likely bogus
 /build/
 /bundle/
 
+# Everything below makes sense on any package repository, so it's stuff
+# that should be put into each such repository
+
 compiled/
-doc/
 
 # common backups, autosaves, lock files, OS meta-files
 *~

racket/lib/.gitignore

@@ -1,3 +1,3 @@
 # Ignore anything other than the "collects" directory
 /*
-!/collects
+!/collects/

racket/lib/collects/pkg/.gitignore

@@ -1 +0,0 @@
-/doc

racket/src/worksp/.gitignore

@@ -7,5 +7,9 @@
 */SGC
 */*.user
 
+# DevStudio generated files
+*/gracket.ncb
+*/gracket.suo
+
 rbuildmode.obj
 rbuildmode.exe

racket/src/worksp/gracket/.gitignore

@@ -1,2 +0,0 @@
-/gracket.ncb
-/gracket.suo

racket/src/worksp/mrstart/.gitignore

@@ -1,2 +0,0 @@
-/mrstart.ncb
-/mrstart.suo

racket/src/worksp/myssink/.gitignore

@@ -1,7 +1 @@
-/myssink.ncb
-/myssink.suo
-
-/Release
 /*.idb
-/*.user
-/x64

racket/src/worksp/mzcom/.gitignore

@@ -1,5 +1,3 @@
-/mzcom.ncb
-/mzcom.suo
 /mzcom_h.h
 /mzcom_i.c
 /mzcom_p.c

racket/src/worksp/mzstart/.gitignore

@@ -1,2 +0,0 @@
-/mzstart.ncb
-/mzstart.suo

racket/src/worksp/racket/.gitignore

@@ -1,2 +0,0 @@
-/racket.ncb
-/racket.suo