[flang] Merge my local .gitignore with master.

Original-commit: flang-compiler/f18@10134ce28313f46952c00f460ccaaea76478c3e9

[flang] Merge branch 'master' of https://github.com/ThePortlandGroup/f18

Original-commit: flang-compiler/f18@d192939d539f0e592d444b0b3c7a1cef07b3433a

[flang] Remove line that was added by mistake

Original-commit: flang-compiler/f18@629348c130ff2d685c9a5d123bdbae9fad676fd0

[flang] Add CMakeLists.txt and .gitignore

Original-commit: flang-compiler/f18@d9a1ea4c49893df5917170270cf6ef5d1880f6ea
Tree-same-pre-rewrite: false

[flang] Support #if/#elif directives with Fortran/C expressions.

Original-commit: flang-compiler/f18@5ea8303954b27b819c37ae87a5fc107a2f0bfa41

[flang] Remove some scaffolding code that I just inadvertently committed, sorry.

Original-commit: flang-compiler/f18@df4dc2ff9481c04ddc35e3650d03c4efe39e9c39

[flang] Preprocessor work.  f18 now passes all my tests except for #if (expression)
and file inclusion.

Original-commit: flang-compiler/f18@07ebac21f543a224a8f426faf206f7525899081e

[flang] Clean up: convert CharPointerWithLength into a proper class.

Original-commit: flang-compiler/f18@514823234fefd422dce2c9f7407c208982e459de

[flang] Add temporary driver main program f2018-demo.cc.

Original-commit: flang-compiler/f18@bbe51ba0ec745088d3cee6d5a170b21fdc71e750

[flang] Add source.{h,cc}.

Original-commit: flang-compiler/f18@39df4a3ef416fa8484542152f2085e9b5a039d53

[flang] Add prescan.{h,cc}.

Original-commit: flang-compiler/f18@6437ba318c8761ad8206dc88d700717fdd4131b7

[flang] Add preprocessor.{h,cc}.

Original-commit: flang-compiler/f18@8ac9fc913d3762f791a411f34fa4f9622d6b3950

[flang] Add position.{h,cc}.

Original-commit: flang-compiler/f18@78c9c256ba1c68946be1a9f7ef87dd704fd1ef27

[flang] Add parse-tree.{h,cc}.

Original-commit: flang-compiler/f18@bface7a17bb774d10f4615e2816f1aa178b49a1a

[flang] Add message.{h,cc}.

Original-commit: flang-compiler/f18@9c21346414a4e13f1bef8b40607880fbcb9bb7f6

[flang] Add idioms.{h,cc}.

Original-commit: flang-compiler/f18@237979b3a8e596ec28edf244c641de1e6ca77f81

[flang] Add Makefile.

Original-commit: flang-compiler/f18@dae117901271d1bd771752689ce76d50411bad7e

[flang] Add user-state.h.

Original-commit: flang-compiler/f18@5daf35b05d7b72ef99dfb756ee0123c87ba167e4

[flang] Add parse-state.h.

Original-commit: flang-compiler/f18@357c9f27955fb3051e85d12720a9271fa8de1b85

[flang] Add indirection.h.

Original-commit: flang-compiler/f18@149aa7654c5f7533b2816bea72f47f7687ff122e

[flang] Add grammar.h.

Original-commit: flang-compiler/f18@e5249a02694e54dc8c1183d265aa3bb07e1a9437

[flang] Add format-specification.h.

Original-commit: flang-compiler/f18@7eea874fa421833d0d031c7bde7d573bc6dc37b7

[flang] Add debug-parser.h.

Original-commit: flang-compiler/f18@e5484d45b4d6ec1e52f79cadcd6979fd9126ff77

[flang] Add cooked-tokens.h.

Original-commit: flang-compiler/f18@7e452551f7647191fac183b10e042d72aa547997

[flang] Add cooked-chars.h.

Original-commit: flang-compiler/f18@da5c3bf08bf5ffbb0b0b53c1335409d9cab90443

[flang] Add char-parsers.h.

Original-commit: flang-compiler/f18@0f72c5cb400a9ff8acc1aa35433b03757700db7d

[flang] Add basic-parsers.h.

Original-commit: flang-compiler/f18@2cb456daaeb3a7768f853928e013efdab9963315

[flang] Add char-buffer.{h,cc}.

Original-commit: flang-compiler/f18@14adb86568730f708ff4f5b85ef29c440a0b80b1

[flang] Add parser-combinators.txt documentation file.

Original-commit: flang-compiler/f18@c4634a44b9081f80440c009c5c400da5cd5e8804

[flang] Adding initial files.

Original-commit: flang-compiler/f18@8afd0a6c23c4db1a7b15d77818b17c6ae176781a

[flang] Add README

Original-commit: flang-compiler/f18@39876049a9d64450329604ec5d3d617cea1608e8