wasm2c: implement the bulk memory operations proposal (WebAssembly#1877)

Co-authored-by: Yuhan Deng <yhdeng@stanford.edu>

README.md

@@ -55,7 +55,7 @@ Wabt has been compiled to JavaScript via emscripten. Some of the functionality i
 | [threads][]           | `--enable-threads`          |   | ✓ | ✓ | ✓ | ✓ |   |
 | [multi-value][]       | `--disable-multi-value`     | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
 | [tail-call][]         | `--enable-tail-call`        |   | ✓ | ✓ | ✓ | ✓ |   |
-| [bulk memory][]       | `--disable-bulk-memory`     | ✓ | ✓ | ✓ | ✓ | ✓ |   |
+| [bulk memory][]       | `--disable-bulk-memory`     | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
 | [reference types][]   | `--disable-reference-types` | ✓ | ✓ | ✓ | ✓ | ✓ |   |
 | [annotations][]       | `--enable-annotations`      |   |   | ✓ |   |   |   |
 | [memory64][]          | `--enable-memory64`         |   | ✓ | ✓ | ✓ | ✓ |   |

scripts/gen-wasm2c-templates.cmake

@@ -1,4 +1,5 @@
 # https://stackoverflow.com/a/47801116
 file(READ ${in} content)
-set(content "const char* ${symbol} = R\"w2c_template(${content})w2c_template\";")
+string(REGEX REPLACE "(.[^\n]*\n)" "R\"w2c_template(\\1)w2c_template\"\n" content "${content}")
+set(content "const char* ${symbol} = ${content};")
 file(WRITE ${out} "${content}")