Add files

core/.gitattributes

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+# this file derived from https://help.github.com/articles/dealing-with-line-endings/
+
+# Set the default behavior, in case people don't have core.autocrlf set.
+* text eol=lf
+
+# Explicitly declare text files you want to always be normalized and converted
+# to native line endings on checkout.
+*.cpp text eol=lf
+*.hpp text eol=lf
+
+# Declare files that will always have CRLF line endings on checkout.
+*.am text eol=lf
+*.ac text eol=lf
+*/*.am text eol=lf
+*/*.ac text eol=lf
+*/*/*.am text eol=lf
+*/*/*.ac text eol=lf
+
+# Denote all files that are truly binary and should not be modified.
+*.png binary
+*.jpg binary