Use upstream relibc again.

Cargo.lock

@@ -96,7 +96,7 @@ dependencies = [
 [[package]]
 name = "redox-exec"
 version = "0.1.0"
-source = "git+https://gitlab.redox-os.org/4lDO2/relibc.git?branch=relibc_cwd#bc8a6d2cc4d2ed4cffdfc1e4797566605c5e54ea"
+source = "git+https://gitlab.redox-os.org/redox-os/relibc.git#1315171a70ba0e9861b73eadd2da316f364b9f6a"
 dependencies = [
  "goblin",
  "plain",
@@ -113,9 +113,9 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.3.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca8ce969b6629faa6f60a71f84022b0217e5ca8bcaeb6d11654506a55ebf8fed"
+checksum = "78340485586b4f341ac019ab057e275c8b54d5025c73289bb521d83f17c54cbb"
 dependencies = [
  "bitflags",
 ]

Cargo.toml

@@ -12,9 +12,8 @@ crate-type = ["staticlib"]
 [dependencies]
 linked_list_allocator = "0.9"
 redox-initfs = { git = "https://gitlab.redox-os.org/redox-os/redox-initfs.git", features = ["kernel"], default-features = false }
-#redox-exec = { git = "https://gitlab.redox-os.org/redox-os/relibc.git" }
-redox-exec = { git = "https://gitlab.redox-os.org/4lDO2/relibc.git", branch = "relibc_cwd" }
-redox_syscall = "0.3"
+redox-exec = { git = "https://gitlab.redox-os.org/redox-os/relibc.git" }
+redox_syscall = "0.3.1"
 
 [profile.release]
 panic = "abort"