Add necessary patches for LLVM 3.7(.1)

And make ORC JIT the default for those LLVM versions. This does
not activate the new LLVM versions by default yet, to give time
to update everything on CI, etc., but doing the actual activation
is a one line change after this.

deps/Makefile

@@ -671,6 +671,11 @@ $(eval $(call LLVM_PATCH,win64-int128.llvm-3.3))
 else ifeq ($(LLVM_VER),3.6.0)
 $(eval $(call LLVM_PATCH,zerosign-llvm-3.6.0))
 $(eval $(call LLVM_PATCH,win64-allocas-llvm-3.6.0))
+else ifeq ($(LLVM_VER),3.7.0)
+$(eval $(call LLVM_PATCH,llvm-3.7.0))
+$(eval $(call LLVM_PATCH,llvm-3.7.1))
+else ifeq ($(LLVM_VER),3.7.1)
+$(eval $(call LLVM_PATCH,llvm-3.7.1))
 endif # LLVM_VER
 
 LLVM_BUILDDIR_withtype := $(LLVM_BUILD_DIR)/build_$(LLVM_BUILDTYPE)

deps/checksums/cfe-3.7.0.src.tar.xz/md5

@@ -0,0 +1 @@
+8f9d27335e7331cf0a4711e952f21f01

deps/checksums/cfe-3.7.0.src.tar.xz/sha512

@@ -0,0 +1 @@
+099d34cb019ea548c6ee85efd22b150beba0aa92061394fa3e423b1ebfe4a5c98c0586e5d56fc5c39e2b1606d36db59f442c056cc59473e32df76c8790c9d0ae

deps/checksums/compiler-rt-3.7.0.src.tar.xz/md5

@@ -0,0 +1 @@
+383c10affd513026f08936b5525523f5

deps/checksums/compiler-rt-3.7.0.src.tar.xz/sha512

@@ -0,0 +1 @@
+2ba6abb3d6ec7f1469cfe1d48fde2069e9a767d19144f80f05516ac63f353ace90a9df3e9d1c1f708f3c397aba0ec61b12e4f105b25a2e1cd26b25b0dd252bc9

deps/checksums/lldb-3.7.0.src.tar.xz/md5

@@ -0,0 +1 @@
+e5931740400d1dc3e7db4c7ba2ceff68

deps/checksums/lldb-3.7.0.src.tar.xz/sha512

@@ -0,0 +1 @@
+52157782ef13e2c8b7b35ff3ccc05887195fe46ddb6bafcf0707a3c46c1e034734b55342b8dbfc46cae7a8c3cb1012345284e4bedb2344c5016b8d19a12e90df

deps/llvm-3.7.0.patch

@@ -0,0 +1,29 @@
+commit 06e88db43d1ff367d03b731c9c1f4f69da78149b
+Author: Keno Fischer <kfischer@college.harvard.edu>
+Date:   Fri Oct 9 17:24:54 2015 +0000
+
+    Clear SectionSymbols in MCContext::Reset
+
+    This was just forgotten when SectionSymbols was introduced and could cause
+    corruption if the MCContext was reused after Reset.
+
+    Reviewers: rafael
+
+    Subscribers: llvm-commits
+
+    Differential Revision: http://reviews.llvm.org/D13547
+
+    git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@249854 91177308-0d34-0410-b5e6-96231b3b80d8
+
+diff --git a/lib/MC/MCContext.cpp b/lib/MC/MCContext.cpp
+index ff195d0..2160b4e 100644
+--- a/lib/MC/MCContext.cpp
++++ b/lib/MC/MCContext.cpp
+@@ -80,6 +80,7 @@ void MCContext::reset() {
+
+   UsedNames.clear();
+   Symbols.clear();
++  SectionSymbols.clear();
+   Allocator.Reset();
+   Instances.clear();
+   CompilationDir.clear();