fix rust bindings build on windows (#1584)

Refine rust bindings.

.gitignore

@@ -12,23 +12,7 @@
 *.jar
 *~
 
-qemu/aarch64-softmmu/
-qemu/aarch64eb-softmmu/
-qemu/arm-softmmu/
-qemu/armeb-softmmu/
-qemu/m68k-softmmu/
-qemu/mips64el-softmmu/
-qemu/mips64-softmmu/
-qemu/mipsel-softmmu/
-qemu/mips-softmmu/
-qemu/sparc64-softmmu/
-qemu/sparc-softmmu/
-qemu/i386-softmmu/
-qemu/x86_64-softmmu/
-qemu/ppc-softmmu/
-qemu/ppc64-softmmu/
-qemu/riscv32-softmmu/
-qemu/riscv64-softmmu/
+qemu/*-softmmu/
 
 tags
 qemu/config-host.ld
@@ -68,8 +52,8 @@ bindings/python/unicorn.egg-info/
 bindings/python/unicorn/lib/
 bindings/python/unicorn/include/
 bindings/python/MANIFEST
-bindings/rust/target/
-bindings/rust/Cargo.lock
+target/
+Cargo.lock
 config.log