Use paths directly for toolchain build tools

Author: Steelskin

.github/workflows/swift-toolchain.yml

@@ -1014,11 +1014,6 @@ jobs:
           }
 
           $SwiftFlags += " -sdk `"${SDKROOT}`""
-          $CLANG_TBLGEN = "${{ github.workspace }}/BinaryCache/0/bin/clang-tblgen${ExeSuffix}"
-          $CLANG_TIDY_CONFUSABLE_CHARS_GEN = "${{ github.workspace }}/BinaryCache/0/bin/clang-tidy-confusable-chars-gen${ExeSuffix}"
-          $LLDB_TBLGEN = "${{ github.workspace }}/BinaryCache/0/bin/lldb-tblgen${ExeSuffix}"
-          $LLVM_CONFIG = "${{ github.workspace }}/BinaryCache/0/bin/llvm-config${ExeSuffix}"
-          $LLVM_TBLGEN = "${{ github.workspace }}/BinaryCache/0/bin/llvm-tblgen${ExeSuffix}"
 
           cmake -B ${{ github.workspace }}/BinaryCache/1 `
                 -C "${CACHE}" `
@@ -1037,13 +1032,13 @@ jobs:
                 @EXTRA_FLAGS `
                 -G Ninja `
                 -S ${{ github.workspace }}/SourceCache/llvm-project/llvm `
-                -D CLANG_TABLEGEN="${CLANG_TBLGEN}" `
-                -D CLANG_TIDY_CONFUSABLE_CHARS_GEN="${CLANG_TIDY_CONFUSABLE_CHARS_GEN}" `
-                -D LLDB_TABLEGEN="${LLDB_TBLGEN}" `
-                -D LLVM_CONFIG_PATH="${LLVM_CONFIG}" `
+                -D CLANG_TABLEGEN="${{ github.workspace }}/BinaryCache/0/bin/clang-tblgen${ExeSuffix}" `
+                -D CLANG_TIDY_CONFUSABLE_CHARS_GEN="${{ github.workspace }}/BinaryCache/0/bin/clang-tidy-confusable-chars-gen${ExeSuffix}" `
+                -D LLDB_TABLEGEN="${{ github.workspace }}/BinaryCache/0/bin/lldb-tblgen${ExeSuffix}" `
+                -D LLVM_CONFIG_PATH="${{ github.workspace }}/BinaryCache/0/bin/llvm-config${ExeSuffix}" `
                 -D LLVM_EXTERNAL_SWIFT_SOURCE_DIR=${{ github.workspace }}/SourceCache/swift `
                 -D LLVM_NATIVE_TOOL_DIR=${{ github.workspace }}/BinaryCache/0/bin `
-                -D LLVM_TABLEGEN="${LLVM_TBLGEN}" `
+                -D LLVM_TABLEGEN="${{ github.workspace }}/BinaryCache/0/bin/llvm-tblgen${ExeSuffix}" `
                 -D LLVM_USE_HOST_TOOLS=NO `
                 -D SWIFT_BUILD_DYNAMIC_SDK_OVERLAY=NO `
                 -D SWIFT_BUILD_DYNAMIC_STDLIB=NO `