subtree-merge https://github.com/hannob/bashcheck plus my bash 2.05b patch

diff --cc bash/bashcheck/LICENSE
index 0000000,670154e..670154e
mode 000000,100644..100644
--- /dev/null
--- 2/LICENSE
+++ b/bash/bashcheck/LICENSE

diff --cc bash/bashcheck/README.md
index 0000000,5af18f6..5af18f6
mode 000000,100644..100644
--- /dev/null
--- 2/README.md
+++ b/bash/bashcheck/README.md

diff --cc bash/bashcheck/bashcheck
index 0000000,4015c33..4015c33
mode 000000,100755..100755
--- /dev/null
--- 2/bashcheck
+++ b/bash/bashcheck/bashcheck