Init script upgrade-related changes.

- defaults to five loops one second each
- loops and timeouts are configurable via defaults files
- while at it, get rid of bashisms in variable substitutions.

debian/nginx.init.in

diff --git a/debian/nginx.init.in b/debian/nginx.init.in
index 72274f6..5da7090 100644
--- a/debian/nginx.init.in
+++ b/debian/nginx.init.in
@@ -22,14 +22,14 @@
 
 [ -r /etc/default/$sysconfig ] && . /etc/default/$sysconfig
 
-DESC=${DESC-%%PROVIDES%%}
-NAME=${NAME-%%PROVIDES%%}
-CONFFILE=${CONFFILE-/etc/nginx/nginx.conf}
-DAEMON=${DAEMON-/usr/sbin/%%PROVIDES%%}
-PIDFILE=${PIDFILE-/var/run/nginx.pid}
-SLEEPSEC=1
-UPGRADEWAITLOOPS=5
-CHECKSLEEP=${CHECKSLEEP-3}
+DESC=${DESC:-%%PROVIDES%%}
+NAME=${NAME:-%%PROVIDES%%}
+CONFFILE=${CONFFILE:-/etc/nginx/nginx.conf}
+DAEMON=${DAEMON:-/usr/sbin/%%PROVIDES%%}
+PIDFILE=${PIDFILE:-/var/run/nginx.pid}
+SLEEPSEC=${SLEEPSEC:-1}
+UPGRADEWAITLOOPS=${UPGRADEWAITLOOPS:-5}
+CHECKSLEEP=${CHECKSLEEP:-3}
 
 [ -x $DAEMON ] || exit 0
 

rpm/SOURCES/nginx.init.in

diff --git a/rpm/SOURCES/nginx.init.in b/rpm/SOURCES/nginx.init.in
index 3083099..66f1500 100755
--- a/rpm/SOURCES/nginx.init.in
+++ b/rpm/SOURCES/nginx.init.in
@@ -33,14 +33,14 @@
     . /etc/sysconfig/$sysconfig
 fi
 
-nginx=${NGINX-/usr/sbin/%PROVIDES%}
+nginx=${NGINX:-/usr/sbin/%PROVIDES%}
 prog=`/bin/basename $nginx`
-conffile=${CONFFILE-/etc/nginx/nginx.conf}
-lockfile=${LOCKFILE-/var/lock/subsys/%PROVIDES%}
-pidfile=${PIDFILE-/var/run/nginx.pid}
-SLEEPMSEC=${SLEEPMSEC-200000}
-UPGRADEWAITLOOPS=${UPGRADEWAITLOOPS-5}
-CHECKSLEEP=${CHECKSLEEP-3}
+conffile=${CONFFILE:-/etc/nginx/nginx.conf}
+lockfile=${LOCKFILE:-/var/lock/subsys/%PROVIDES%}
+pidfile=${PIDFILE:-/var/run/nginx.pid}
+SLEEPSEC=${SLEEPSEC:-1}}
+UPGRADEWAITLOOPS=${UPGRADEWAITLOOPS:-5}
+CHECKSLEEP=${CHECKSLEEP:-3}
 RETVAL=0
 
 start() {
@@ -77,7 +77,7 @@
     echo
 
     for i in `/usr/bin/seq $UPGRADEWAITLOOPS`; do
-        /bin/usleep $SLEEPMSEC
+        /bin/sleep $SLEEPSEC
         if [ -f ${oldbinpidfile} -a -f ${pidfile} ]; then
             echo -n $"Graceful shutdown of old $prog: "
             killproc -p ${oldbinpidfile} ${prog} -QUIT

rpm/SOURCES/nginx.suse.init

diff --git a/rpm/SOURCES/nginx.suse.init b/rpm/SOURCES/nginx.suse.init
index e6abde3..c363f9a 100755
--- a/rpm/SOURCES/nginx.suse.init
+++ b/rpm/SOURCES/nginx.suse.init
@@ -39,10 +39,10 @@
 	if [ "$1" = "stop" ]; then exit 0;
 	else exit 5; fi; }
 
-nginx=${NGINX-/usr/sbin/nginx}
-conffile=${CONFFILE-/etc/nginx/nginx.conf}
-pidfile=${PIDFILE-/var/run/nginx.pid}
-SLEEPMSEC=100000
+nginx=${NGINX:-/usr/sbin/nginx}
+conffile=${CONFFILE:-/etc/nginx/nginx.conf}
+pidfile=${PIDFILE:-/var/run/nginx.pid}
+SLEEPSEC=${SLEEPSEC:-1}
 
 . /etc/rc.status
 
@@ -54,7 +54,7 @@
     configtest -q || return 6
     echo -n $"Starting new master: "
     /sbin/killproc -p ${pidfile} -USR2 $nginx
-    /bin/usleep $SLEEPMSEC
+    /bin/sleep $SLEEPSEC
     if [ -f ${oldbinpidfile} -a -f ${pidfile} ]; then
         echo -n $"Graceful shutdown of old nginx: "
         killproc -p ${oldbinpidfile} -QUIT $nginx

rpm/SOURCES/nginx.upgrade.sh

diff --git a/rpm/SOURCES/nginx.upgrade.sh b/rpm/SOURCES/nginx.upgrade.sh
index 6503233..5343662 100644
--- a/rpm/SOURCES/nginx.upgrade.sh
+++ b/rpm/SOURCES/nginx.upgrade.sh
@@ -5,12 +5,16 @@
 # Source function library.
 [ -f /etc/rc.d/init.d/functions ] && . /etc/rc.d/init.d/functions
 
+if [ -f /etc/sysconfig/nginx ]; then
+    . /etc/sysconfig/nginx
+fi
+
 prog=nginx
 nginx=/usr/sbin/nginx
 conffile=/etc/nginx/nginx.conf
 pidfile=`/usr/bin/systemctl show -p PIDFile nginx.service | sed 's/^PIDFile=//' | tr ' ' '\n'`
-SLEEPMSEC=200000
-UPGRADEWAITLOOPS=5
+SLEEPSEC=${SLEEPSEC:-1}
+UPGRADEWAITLOOPS=${UPGRADEWAITLOOPS:-5}
 
 oldbinpidfile=${pidfile}.oldbin
 ${nginx} -t -c ${conffile} -q || return 6
@@ -19,7 +23,7 @@
 echo
 
 for i in `/usr/bin/seq $UPGRADEWAITLOOPS`; do
-    /bin/usleep $SLEEPMSEC
+    /bin/sleep $SLEEPSEC
     if [ -f ${oldbinpidfile} -a -f ${pidfile} ]; then
         echo -n $"Graceful shutdown of old $prog: "
         killproc -p ${oldbinpidfile} ${prog} -QUIT