Fix up gitignores

Move tests gitignore into its own directory
Use stricter patterns where they make sense

.gitignore

@@ -1,16 +1,12 @@
-rgbasm
-rgblink
-rgbfix
-rgbgfx
-rgbshim.sh
+/rgbasm
+/rgblink
+/rgbfix
+/rgbgfx
+/rgbshim.sh
 *.o
 *.exe
 *.dll
 .checkpatch-camelcase.*
 CMakeCache.txt
-CMakeFiles
+CMakeFiles/
 cmake_install.cmake
-
-test/pokecrystal
-test/pokered
-test/ucity

test/.gitignore

@@ -0,0 +1,3 @@
+/pokecrystal/
+/pokered/
+/ucity/