First attempt at a Linux build (#193)

* First attempt at a Linux build

- Fix up places where C++ idioms were written assuming lenient behavior of Microsoft's compiler

- Add a few more alternatives for platform-specific behavior where Windows was the only platform accounted for.

- Add a basic Makefile that can at least invoke our build, even if it isn't going good dependency tracking, etc.

- Build `libslang.so` and `slangc` that depends on it, using a relative `RPATH` to make the binary portable (I hope)

- Add an initial `.travis.yml` to see if we can trigger their build process.

* Fixup: const bug in `List::Sort`

I'm not clear why this gets picked up by the gcc *and* clang that Travis uses, but not the (newer) gcc I'm using on Ubuntu here, but I'm hoping it is just some missing `const` qualifiers.

* Fixup: reorder specialization of "class info"

Clang complains about things being specialized after being instantiated (implicilty), and I hope it is just the fact that I generate the class info for the roots of the hierarchy after the other cases. We'll see.

* Fixup: add `platform.cpp` to unified/lumped build

* Fixup: Windows uses `FreeLibrary`

and not `UnloadLibrary`

* Fixup: fix Windows project file to include new source file

This obviously points to the fact that we are going to need to be generating these files sooner or later.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/slangc/main.cpp b/source/slangc/main.cpp
index da670909d..7c57fa8a9 100644
--- a/source/slangc/main.cpp
+++ b/source/slangc/main.cpp
@@ -1,11 +1,11 @@
 // main.cpp
 
 #define SLANG_DYNAMIC
-#include "../slang.h"
+#include "../../slang.h"
 
 SLANG_API void spSetCommandLineCompilerMode(SlangCompileRequest* request);
 
-#include "core/slang-io.h"
+#include "../core/slang-io.h"
 
 using namespace Slang;