Update .gitignore

Add .*.sw? (vim swapfiles).
Add *~ (backup files).
Add *.gcno and *.gcda (gcov intermediates).

.gitignore

@@ -25,6 +25,7 @@ stamp-h
 stamp-h1
 stamp-h.in
 *~
+.*.sw?
 *.la
 *.lo
 *.orig

boilerplate/.gitignore

@@ -3,8 +3,12 @@
 *.exe
 *.manifest
 *.o
+*.gcda
+*.gcno
 *.obj
 *.ilk
 *.suo
 *.lib
 *.pdb
+*~
+.*.sw?

perf/.gitignore

@@ -2,6 +2,8 @@ cairo-perf
 cairo-perf-diff-files
 index.html
 *.o
+*.gcda
+*.gcno
 *.exe
 *.manifest
 *.obj
@@ -9,3 +11,5 @@ index.html
 *.suo
 *.lib
 *.pdb
+*~
+.*.sw?

src/.gitignore

@@ -19,4 +19,5 @@ cairo.def
 *.exp
 *.lib
 *~
+.*.sw?
 TAGS

test/.gitignore

@@ -124,6 +124,7 @@ set-source
 show-glyphs-many
 show-text-current-point
 skew-extreme
+solid-pattern-cache-stress
 source-clip
 source-clip-scale
 source-surface-scale-paint
@@ -155,6 +156,7 @@ valgrind-log
 *-out.svg
 *-diff.png
 *.manifest
+*.gcda
 *.gcno
 *.exe
 *.obj
@@ -166,3 +168,4 @@ valgrind-log
 *.suo
 *.o
 *~
+.*.sw?