src/cache_hash.cpp: support file paths that contain spaces;
src/cache_hash.cpp: support file paths that contain spaces;

ref: #1510

zig-lang/zig,zig-lang/zig,raulgrell/zig,raulgrell/zig,raulgrell/zig,Dimenus/zig,raulgrell/zig,andrewrk/zig,zig-lang/zig,andrewrk/zig,raulgrell/zig,Dimenus/zig,Dimenus/zig