init repo.

third_party/mimalloc/.gitattributes

@@ -0,0 +1,12 @@
+# default behavior is to always use unix style line endings
+* text eol=lf
+*.png binary
+*.pdn binary
+*.jpg binary
+*.sln binary
+*.suo binary
+*.vcproj binary
+*.patch binary
+*.dll binary
+*.lib binary
+*.exe binary