Clean up .gitignore files

Move generic patterns to the top-level .gitignore and add some more
patterns for convenience.

.gitignore

@@ -1,6 +1,8 @@
 # No editor backup files.
 *.sw*
 *.backup
+*.orig
+\#*#
 *~
 
 /Runtime/*
@@ -13,3 +15,31 @@
 *.i
 *.s
 *.e
+
+# object file/libraries
+*.a
+*.o
+*.so
+
+# python
+*.pyc
+
+# sgx
+*.sig
+*.token
+*.cached
+
+# gnu global
+GPATH
+GTAGS
+GSYMS
+GRTAGS
+
+# tags/etags
+tags
+TAGS
+
+# cscope
+cscope.*
+ncscope.*
+*cscope*

LibOS/.gitignore

@@ -1,10 +1,3 @@
-# source only please
-*.o
-*.so
-*.a
-
-*cscope*
-
 /glibc-*.tar.gz
 /glibc-*/
 /build.log

LibOS/shim/test/.gitignore

@@ -1,6 +1,3 @@
 *.manifest
 *.manifest.sgx
-*.sig
-*.token
-*.cached
 pal_loader

LibOS/shim/test/apps/python/.gitignore

@@ -1,2 +1 @@
-*.pyc
 /benchmarks/

Pal/.gitignore

@@ -1,6 +1,2 @@
-*.o
-cscope*
-*.a
-*.so
 *.run
 .nfs*

Pal/ipc/linux/.gitignore

@@ -1,5 +1,4 @@
 *.ko
-*.o
 *.cmd
 *.mod.c
 /Module.symvers

Pal/src/.gitignore

@@ -1,7 +1,4 @@
 /host_endian.h
-*.o
-*.so
-*.a
 /pal
 /pal_sec
 /Makefile.Status

Pal/src/host/Linux-SGX/.gitignore

@@ -5,4 +5,3 @@
 
 *.pem
 *.pub
-*.pyc

Scripts/.gitignore

@@ -1 +0,0 @@
-*.pyc