bash-completion: Update from 2.7 to 2.8

packages/bash-completion/build.sh

@@ -1,7 +1,7 @@
 TERMUX_PKG_HOMEPAGE=https://github.com/scop/bash-completion
 TERMUX_PKG_DESCRIPTION="Programmable completion for the bash shell"
-TERMUX_PKG_VERSION=2.7
+TERMUX_PKG_VERSION=2.8
+TERMUX_PKG_SHA256=c01f5570f5698a0dda8dc9cfb2a83744daa1ec54758373a6e349bd903375f54d
 TERMUX_PKG_SRCURL=https://github.com/scop/bash-completion/releases/download/${TERMUX_PKG_VERSION}/bash-completion-${TERMUX_PKG_VERSION}.tar.xz
-TERMUX_PKG_SHA256=41ba892d3f427d4a686de32673f35401bc947a7801f684127120cdb13641441e
 TERMUX_PKG_DEPENDS="bash"
 TERMUX_PKG_PLATFORM_INDEPENDENT=yes

packages/bash-completion/completions-man.patch

@@ -1,14 +1,13 @@
-diff -u -r ../bash-completion-2.5/completions/man ./completions/man
---- ../bash-completion-2.5/completions/man	2016-09-04 17:26:26.000000000 +0200
-+++ ./completions/man	2017-05-25 21:59:14.472791735 +0200
-@@ -57,9 +57,7 @@
+diff -u -r ../bash-completion-2.8/completions/man ./completions/man
+--- ../bash-completion-2.8/completions/man	2018-03-17 01:02:23.000000000 +0100
++++ ./completions/man	2018-05-13 01:31:56.406265511 +0200
+@@ -51,8 +51,7 @@
+         return
      fi
  
-     local manpath="$MANPATH"
--    [[ -z $manpath ]] && \
--        manpath=$( manpath 2>/dev/null || command man -w 2>/dev/null )
+-    local manpath=$( manpath 2>/dev/null || command man -w 2>/dev/null )
 -    [[ -z $manpath ]] && manpath="/usr/share/man:/usr/local/share/man"
-+    [[ -z $manpath ]] && manpath="@TERMUX_PREFIX@/share/man"
++    local manpath="@TERMUX_PREFIX@/share/man"
  
      # determine manual section to search
      local sect