Switch default LLVM version to LLVM 11

LLVM 10 and LLVM 9 can still be used with the build tag llvm10 or llvm9.

Author: aykevl

llvm_config_linux.go

@@ -1,13 +1,13 @@
 // +build !byollvm
-// +build linux,!llvm9,!llvm11
+// +build linux,!llvm10,!llvm9
 
 package llvm
 
 // Automatically generated by `make config BUILDDIR=`, do not edit.
 
-// #cgo CPPFLAGS: -I/usr/lib/llvm-10/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
+// #cgo CPPFLAGS: -I/usr/lib/llvm-11/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
 // #cgo CXXFLAGS: -std=c++14
-// #cgo LDFLAGS: -L/usr/lib/llvm-10/lib  -lLLVM-10
+// #cgo LDFLAGS: -L/usr/lib/llvm-11/lib  -lLLVM-11
 import "C"
 
 type run_build_sh int

llvm_config_linux_llvm11.go renamed to llvm_config_linux_llvm10.go

@@ -1,13 +1,13 @@
 // +build !byollvm
-// +build linux,llvm11
+// +build linux,llvm10
 
 package llvm
 
 // Automatically generated by `make config BUILDDIR=`, do not edit.
 
-// #cgo CPPFLAGS: -I/usr/lib/llvm-11/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
+// #cgo CPPFLAGS: -I/usr/lib/llvm-10/include -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS
 // #cgo CXXFLAGS: -std=c++14
-// #cgo LDFLAGS: -L/usr/lib/llvm-11/lib  -lLLVM-11
+// #cgo LDFLAGS: -L/usr/lib/llvm-10/lib  -lLLVM-10
 import "C"
 
 type run_build_sh int