!4 add entr source package and spec file

From: @yaozc701
Reviewed-by: @small_leek
Signed-off-by: @small_leek

entr.spec

@@ -0,0 +1,47 @@
+Name:           entr
+Version:        4.5
+Release:        1
+Summary:        Run arbitrary commands when files change
+License:        ISC
+URL:            http://eradman.com/%{name}project/
+Source0:        http://eradman.com/%{name}project/code/%{name}-%{version}.tar.gz
+
+BuildRequires:  gcc
+BuildRequires:  make
+
+%description
+entr is a file watcher runs specified commands when target files change
+
+%global debug_package %{nil}
+
+%prep
+%setup -q
+
+%build
+./configure
+make
+
+%install
+%make_install
+mkdir -p %{buildroot}/%{_docdir}/%{name}
+cp LICENSE %{buildroot}/%{_docdir}/%{name}/
+cp README.md %{buildroot}/%{_docdir}/%{name}/
+cp NEWS %{buildroot}/%{_docdir}/%{name}
+
+
+%check
+make test
+
+%files
+/usr/local/bin/entr
+/usr/local/share/man/man1/entr.1
+%dir %{_docdir}/%{name}
+%{_docdir}/%{name}/LICENSE
+%{_docdir}/%{name}/NEWS
+%{_docdir}/%{name}/README.md
+
+
+%changelog
+* Fri May 21 2021 yaozc7 <yaozc7@foxmail.com>
+- add source package and spec file
+