[sequences.tex] add small sample of map and mapcar

[kochigami]

I added small explanations of how to use map and mapcar.
When I've writing jsk-ros-pkg/jsk_robot#1074, I thought it would be useful if there were samples of them.

(By the way, how to compile (j-)manual.pdf...? I'd like to check whether my PR is ok to be merged,)

[Affonso-Gui]

@kochigami You can generate (j)manual.pdf by going to the (j)latex directory and running make. This will also update some *.hlp files, which are welcome to be included in this PR as well.

[kochigami]

Thank you for your advice!
I added *.hlp, *.dvi, and *.pdf files.

[kochigami]

test4 in unittest.l seems to fail...?

+ eusgl /home/travis/build/euslisp/EusLisp/test/unittest.l
configuring by "/home/travis/jskeus/eus/lib/eusrt.l"
;; readmacro ;; object ;; packsym ;; common ;; constants ;; stream ;; string ;; loader ;; pprint ;; process ;; hashtab ;; array ;; mathtran ;; eusdebug ;; eusforeign ;; extnum ;; coordinates ;; tty ;; history ;; toplevel ;; trans ;; comp ;; builtins ;; par ;; intersection ;; geoclasses ;; geopack ;; geobody ;; primt ;; compose ;; polygon ;; viewing ;; viewport ;; viewsurface ;; hid ;; shadow ;; bodyrel ;; dda ;; helpsub ;; eushelp ;; xforeign ;; Xdecl ;; Xgraphics ;; Xcolor ;; Xeus ;; Xevent ;; Xpanel ;; Xitem ;; Xtext ;; Xmenu ;; Xscroll ;; Xcanvas ;; Xtop ;; Xapplwin 
�[31mXserver connection failed�[0m;; pixword ;; RGBHLS ;; convolve ;; piximage ;; pbmfile ;; image_correlation ;; oglforeign ;; gldecl ;; glconst ;; glforeign ;; gluconst ;; gluforeign ;; glxconst ;; glxforeign ;; eglforeign ;; eglfunc ;; glutil ;; gltexture ;; glprim ;; gleus ;; glview ;; toiv-undefined ;; fstringdouble �[34m
EusLisp 9.26(d23a023) for Linux64 created on cb3d95363571(Thu May 2 12:33:11 UTC 2019)�[0m
TEST-NAME: test1
  now testing...
�[32mstart testing [test1]
�[0mTEST-NAME: test2
  now testing...
�[32mstart testing [test2]
�[0mTEST-NAME: test3
  now testing...
�[32mstart testing [test3]
�[0mTEST-NAME: test4
  now testing...
�[32mstart testing [test4]
�[0m�[31m*** This test  fails intentinally ****
�[0m�[31m[ERROR] test nil failed ... (false ^[0mm*** This test  fails intentinally ****
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] test nil failed ... (false ^[0mm*** This test  fails intentinally ****
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71(Thu May 2 12:33:11 UTC 2019)^[).^[0m
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st nil failed ... (false ^[0mm***).^[0m
est  fails intentinally ****
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ay 2 12:33:11 UTC 2019)^[).^[0m
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ailed ... (false ^[0mm***).^[0m
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�[31m[ERROR] test nil failed ... (false s intentinally ****
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[).^[0m
s).^[0m
ailed ... (false ^[0mm***).^[0m
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l).�[0m
ALL RESULTS:
  TEST-NUM: 4
    PASSED:   3
�[31m    FAILURE:  1

[kochigami]

Oh, that was a test which fails intentionally :)

The final output says it is a timeout:

No output has been received in the last 10m0s, this potentially indicates a stalled build or something wrong with the build itself.
Check the details on how to adjust your build configuration on: https://docs.travis-ci.com/user/common-build-problems/#Build-times-out-because-no-output-was-received

The build has been terminated

[Affonso-Gui]

Probably the same as in #380 .
Should pass if the PRs in the description get merged.