Runtimes: adjust the linking to _Concurrency

`_Concurrency` is being implicitly imported and then linked into the
runtime. Disable the implicit import of the concurrency runtime to allow
proper control over the linkage for the library.

Author: compnerd

Runtimes/Supplemental/StringProcessing/CMakeLists.txt

@@ -47,6 +47,7 @@ option(${PROJECT_NAME}_ENABLE_PRESPECIALIZATION "Enable generic metadata prespec
 add_compile_options(
   $<$<COMPILE_LANGUAGE:Swift>:-explicit-module-build>
   $<$<COMPILE_LANGUAGE:Swift>:-nostdlibimport>
+  "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -disable-implicit-concurrency-module-import>"
   "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-Xfrontend -disable-implicit-string-processing-module-import>"
   "$<$<AND:$<BOOL:${${PROJECT_NAME}_ENABLE_LIBRARY_EVOLUTION}>,$<COMPILE_LANGUAGE:Swift>>:-enable-library-evolution>"
   "$<$<AND:$<BOOL:${${PROJECT_NAME}_ENABLE_PRESPECIALIZATION}>,$<COMPILE_LANGUAGE:Swift>>:SHELL:-Xfrontend -prespecialize-generic-metadata>")

Runtimes/Supplemental/StringProcessing/_RegexParser/CMakeLists.txt

@@ -31,7 +31,8 @@ add_library(swift_RegexParser
   Utility/Errors.swift
   Utility/MissingUnicode.swift)
 
-target_link_libraries(swift_RegexParser PRIVATE swiftCore)
+target_link_libraries(swift_RegexParser PRIVATE
+  swiftCore)
 
 set_target_properties(swift_RegexParser PROPERTIES
   Swift_MODULE_NAME _RegexParser)