Moves language specific Git ignores into language subfolders.

.gitignore

@@ -1,7 +0,0 @@
-.idea/workspace.xml
-*.pyc
-/perl6/lib/.precomp
-/elixir/_build/
-python/.cache
-python/.coverage
-**/.idea

elixir/.gitignore

@@ -0,0 +1 @@
+_build/

perl6/.gitignore

@@ -0,0 +1 @@
+lib/.precomp

python/.gitignore

@@ -0,0 +1,5 @@
+*.pyc
+.cache
+.coverage
+.idea/
+*.iml