Tweak the spec file

This removes the obsolete Group tag, and replaces tabs by spaces.

libev.spec

@@ -1,16 +1,15 @@
 %global source_dir  %{_datadir}/%{name}-source
 %global inst_srcdir %{buildroot}/%{source_dir}
 
-Name:		libev
-Summary:	High-performance event loop/event model with lots of features
-Version:	4.11
-Release:	1%{?dist}
-Group:		System Environment/Libraries
-License:	BSD or GPLv2+
-URL:		http://software.schmorp.de/pkg/libev.html
-Source0:	http://dist.schmorp.de/libev/Attic/%{name}-%{version}.tar.gz
-Source1:	%{name}.pc.in
-BuildRequires:	automake libtool
+Name:             libev
+Summary:          High-performance event loop/event model with lots of features
+Version:          4.11
+Release:          1%{?dist}
+License:          BSD or GPLv2+
+URL:              http://software.schmorp.de/pkg/libev.html
+Source0:          http://dist.schmorp.de/libev/Attic/%{name}-%{version}.tar.gz
+Source1:          %{name}.pc.in
+BuildRequires:    automake libtool
 
 %description
 Libev is modeled (very loosely) after libevent and the Event Perl
@@ -18,24 +17,24 @@ module, but is faster, scales better and is more correct, and also more
 featureful. And also smaller.
 
 
-%package 	devel
-Summary:	High-performance event loop/event model with lots of features
-Group:		System Environment/Libraries
-Requires:	%{name}%{?_isa} = %{version}-%{release}
-Requires:	pkgconfig
+%package devel
+Summary:          High-performance event loop/event model with lots of features
+Group:            System Environment/Libraries
+Requires:         %{name}%{?_isa} = %{version}-%{release}
+Requires:         pkgconfig
 
-%description 	devel
+%description devel
 This package contains the development headers and libraries for libev.
 
 
-%package	source
-Summary:	High-performance event loop/event model with lots of features
-Group:		System Environment/Libraries
+%package source
+Summary:          High-performance event loop/event model with lots of features
+Group:            System Environment/Libraries
 %if 0%{?fedora} >= 12 || 0%{?rhel} > 5
-BuildArch:     noarch
+BuildArch:        noarch
 %endif
 
-%description	source
+%description source
 This package contains the source code for libev.
 
 
@@ -54,9 +53,11 @@ automake
 %configure --disable-static --with-pic --includedir=%{_includedir}/%{name}
 make %{?_smp_mflags}
 
+
 %check
 make check
 
+
 %install
 make install DESTDIR=%{buildroot} INSTALL="install -p"
 
@@ -68,9 +69,11 @@ mkdir -p %{inst_srcdir}
 find . -type f | grep -E '.*\.(c|h|am|ac|inc|m4|h.in|pc.in|man.pre|pl|txt)$' | xargs tar cf - | (cd %{inst_srcdir} && tar xf -)
 install -p -m 0644 Changes ev.pod LICENSE README %{inst_srcdir}
 
+
 %post -p /sbin/ldconfig
 %postun -p /sbin/ldconfig
 
+
 %files
 %doc Changes LICENSE README
 %{_libdir}/%{name}.so.4