improvements to zig build system and unwrap error safety

 * zig build system: create standard dynamic library sym links
 * unwrapping an error results in a panic message that contains
   the error name
 * rename error.SysResources to error.SystemResources
 * add std.os.symLink
 * add std.os.deleteFile

1 files changed, 8 insertions, 0 deletions

diff --git a/std/os/linux.zig b/std/os/linux.zig
index 640a915b77..2214fb8dd1 100644
--- a/std/os/linux.zig
+++ b/std/os/linux.zig
@@ -287,6 +287,10 @@ pub fn read(fd: i32, buf: &u8, count: usize) -> usize {
     arch.syscall3(arch.SYS_read, usize(fd), usize(buf), count)
 }
 
+pub fn symlink(existing: &const u8, new: &const u8) -> usize {
+    arch.syscall2(arch.SYS_symlink, usize(existing), usize(new))
+}
+
 pub fn pread(fd: i32, buf: &u8, count: usize, offset: usize) -> usize {
     arch.syscall4(arch.SYS_pread, usize(fd), usize(buf), count, offset)
 }
@@ -340,6 +344,10 @@ pub fn kill(pid: i32, sig: i32) -> usize {
     arch.syscall2(arch.SYS_kill, usize(pid), usize(sig))
 }
 
+pub fn unlink(path: &const u8) -> usize {
+    arch.syscall1(arch.SYS_unlink, usize(path))
+}
+
 pub fn waitpid(pid: i32, status: &i32, options: i32) -> usize {
     arch.syscall4(arch.SYS_wait4, usize(pid), usize(status), usize(options), 0)
 }