remove sync recv, node cache msgs for sync recv.

lichao

2021-05-18 e54b8e58780c7d9f37b06cc4e1dc88badb2129c9

 .gitignore

@@ -1,2 +1,13 @@
*.un~

build/
debug/
release/
Makefile
utest/utest
*.bak
gmon.out
*/bhshmq_center
*/help
*/bhshmqbox
*/bhshmq_status
.idea