[ELF] Output section phdr: support quoted names

Author: MaskRay

lld/ELF/ScriptParser.cpp

@@ -1643,7 +1643,7 @@ SmallVector<StringRef, 0> ScriptParser::readOutputSectionPhdrs() {
   SmallVector<StringRef, 0> phdrs;
   while (!errorCount() && peek().starts_with(":")) {
     StringRef tok = next();
-    phdrs.push_back((tok.size() == 1) ? next() : tok.substr(1));
+    phdrs.push_back((tok.size() == 1) ? readName() : tok.substr(1));
   }
   return phdrs;
 }

lld/test/ELF/linkerscript/phdrs.s

@@ -7,8 +7,8 @@ PHDRS {all PT_LOAD FILEHDR PHDRS ;}
 SECTIONS {
   . = 0x10000200;
   .text : {*(.text*)} :all
-  .foo : {*(.foo.*)} :all
-  .data : {*(.data.*)} :all}
+  .foo : {*(.foo.*)} :"all"
+  .data : {*(.data.*)} : "all"}
 
 # RUN: ld.lld -o 1 -T 1.lds a.o
 # RUN: llvm-readelf -Sl 1 | FileCheck %s